```html
<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>销售管理AI系统 - 用户登录</title>
    <link href="https://lf3-cdn-tos.bytecdntp.com/cdn/expire-1-M/tailwindcss/2.2.19/tailwind.min.css" rel="stylesheet">
    <link href="https://lf6-cdn-tos.bytecdntp.com/cdn/expire-100-M/font-awesome/6.0.0/css/all.min.css" rel="stylesheet">
    <link href="https://fonts.googleapis.com/css2?family=Noto+Serif+SC:wght@400;500;600;700&family=Noto+Sans+SC:wght@300;400;500;700&display=swap" rel="stylesheet">
    <style>
        body {
            font-family: 'Noto Sans SC', sans-serif;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .glass-card {
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            border-radius: 15px;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.18);
        }
        .btn-primary {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            border-radius: 10px;
            padding: 12px 24px;
            transition: all 0.3s ease;
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
        }
        .form-control {
            border-radius: 10px;
            border: 2px solid #e2e8f0;
            padding: 12px 16px;
            transition: border-color 0.3s ease;
        }
        .form-control:focus {
            border-color: #667eea;
            box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
        }
    </style>
</head>
<body class="p-4">
    <div class="container mx-auto max-w-md">
        <div class="glass-card p-8">
            <!-- 登录标题 -->
            <div class="text-center mb-8">
                <h1 class="text-3xl font-bold text-gray-800 mb-2">销售管理AI系统</h1>
                <p class="text-gray-600">智能赋能销售，提升转化效率</p>
            </div>

            <!-- 登录表单 -->
            <form id="loginForm" class="space-y-6">
                <div>
                    <label for="username" class="block text-sm font-medium text-gray-700 mb-2">
                        <i class="fas fa-user mr-2"></i>用户名
                    </label>
                    <input type="text" id="username" name="username" 
                           class="form-control w-full" 
                           placeholder="请输入用户名" required>
                </div>

                <div>
                    <label for="password" class="block text-sm font-medium text-gray-700 mb-2">
                        <i class="fas fa-lock mr-2"></i>密码
                    </label>
                    <input type="password" id="password" name="password" 
                           class="form-control w-full" 
                           placeholder="请输入密码" required>
                </div>

                <div class="flex items-center justify-between">
                    <div class="flex items-center">
                        <input type="checkbox" id="remember" name="remember" class="h-4 w-4 text-blue-600 rounded">
                        <label for="remember" class="ml-2 text-sm text-gray-600">记住登录状态</label>
                    </div>
                    <a href="#" class="text-sm text-blue-600 hover:text-blue-800">忘记密码？</a>
                </div>

                <button type="submit" class="btn-primary w-full text-white font-semibold">
                    <i class="fas fa-sign-in-alt mr-2"></i>登录
                </button>
            </form>

            <!-- 企业微信扫码登录 -->
            <div class="mt-6 pt-6 border-t border-gray-200">
                <div class="text-center">
                    <p class="text-sm text-gray-600 mb-4">或使用企业微信扫码登录</p>
                    <div class="bg-white p-4 rounded-lg inline-block">
                        <div class="w-32 h-32 bg-gray-100 flex items-center justify-center rounded">
                            <i class="fas fa-qrcode text-4xl text-gray-400"></i>
                        </div>
                    </div>
                    <p class="text-xs text-gray-500 mt-2">打开企业微信扫一扫</p>
                </div>
            </div>

            <!-- 注册链接 -->
            <div class="text-center mt-6">
                <p class="text-sm text-gray-600">
                    还没有账号？
                    <a href="register.html" class="text-blue-600 hover:text-blue-800 font-medium">立即注册</a>
                </p>
            </div>
        </div>
    </div>

    <script>
        document.getElementById('loginForm').addEventListener('submit', function(e) {
            e.preventDefault();
            const username = document.getElementById('username').value;
            const password = document.getElementById('password').value;
            
            // 模拟登录验证
            if (username && password) {
                // 登录成功，跳转到仪表盘
                window.location.href = 'dashboard.html';
            } else {
                alert('请输入用户名和密码');
            }
        });
    </script>
</body>
</html>
```